About IEM One

IEM One is an interactive weather data visualization tool that provides access to radar imagery and weather warnings.

Exit to IEM Homepage

Recent Changes

• 17 June 2025: Added webcam imagery collected by the IEM.
• 19 May 2025: Added this help page.

URL Parameters

These are the URL parameters that can be used to deep link into application.

• zoom=: Map zoom level.
• lat=: Map center north latitude.
• lon=: Map center east longitude.
• rwis=1_or_0: Show or hide the Iowa DOT RWIS webcams.
• dashcam=1_or_0: Show or hide the Iowa DOT dashcams.
• webcam=1_or_0: Show or hide the TV webcams.
• warnings=1_or_0: Show or hide the weather warnings.
• radar=1_or_0: Show or hide the radar imagery.
• sps=1_or_0: Show or hide the special weather statements.

Features

• Mode Selection: Choose between Real-time and Archive modes
• Time Navigation: Use arrow buttons or input field to navigate through time
• Layer Controls (☰): Toggle radar and warning layers
• Warnings Panel (⚠): View active weather warnings

Controls

• Time Controls: Located at the bottom of the screen
• Layer Toggle: Click ☰ to show/hide layer controls
• Warning Toggle: Click ⚠ to show/hide active warnings
• Exit: Click ⤶ to exit IEM One